Use the formula of the present value of an annuity ordinary which is Pv=pmt [(1-(1+r/k)^(-kn))÷(r/k)] Pv present value 5500 PMT monthly payment? R interest rate 0.115 K compounded monthly 12 N time 5years Solve the formula for PMT PMT=Pv÷ [(1-(1+r/k)^(-kn))÷(r/k)] PMT=5,500÷((1−(1+0.115÷12)^( −12×5))÷(0.115÷12)) =120.95